CITROËN C-ZERO Handbook page 140

02 RADIO
Entering a frequency manually
Press MENU, select "Radio", then
select "Write freq.".
Press + or - to select the desired
frequency and confirm with "OK".
138
RDS
RDS, if displayed, enables you to continue listening to the same
station by automatic retuning to alternative frequencies. However,
in certain conditions, coverage of an RDS station may not be
assured throughout the country as radio stations do not cover
100 % of the territory. This explains the loss of reception of the
station during a journey.
With source FM1 or FM2, press MENU
then select "Radio".
Select or deselect "RDS" to activate or
deactivate RDS then confirm with "OK"
to save the setting.